package com.zxy.demo.netty;

import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;

/**
 * TimeClient.
 * 
 * Created by zxybird on 17/1/5.
 */
public class TimeClient {

  public void connect(int port, String host) throws Exception {
    // 配置客户端NIO线程组
    EventLoopGroup group = new NioEventLoopGroup();
    try {
      Bootstrap b = new Bootstrap();
      b.group(group).channel(NioSocketChannel.class).option(ChannelOption.TCP_NODELAY, true)
          .handler(new ChannelInitializer<SocketChannel>() {
            @Override
            protected void initChannel(SocketChannel arg0) throws Exception {
              System.out.println("client initChannel..");
              arg0.pipeline().addLast(new TimeClientHandler());
            }
          });
      // 发起异步连接操作
      ChannelFuture f = b.connect(host, port).sync();
      // 等待客户端链路关闭
      f.channel().closeFuture().sync();
    } finally {
      // 优雅退出，释放NIO线程组
      group.shutdownGracefully();
    }
  }

  public static void main(String[] args) throws Exception {
    int port = 9000;
    if (args != null && args.length > 0) {
      try {
        port = Integer.parseInt(args[0]);
      } catch (Exception e) {
      }
    }
    new TimeClient().connect(port, "127.0.0.1");
  }
}
